1. An equation that can be written in the form ax²+bx+c=0, where a≠0.
a. Linear Equation
b. Linear Inequality
c. Quadratic Equation
d. Quadratic Inequality
2. Which is not a quadratic equation?
a. x²-4=0
b. -9+x²=0
c. -2+9x+x²=0
d. -7x+12=0
3. 10x²-4x+8=0, is a quadratic equation in the form ax²+bx+c=0. The value of b is __________?
a. 10
b. -4
c. 8
d. 0
4. Which of the following quadratic equations can be solved easily by extracting square roots?
a. x²+7x+12=0
b. 2w²+7w-3=0
c. 4t²-9=0
d. 3v²+2v-8=0
5. What is x²-2x=120 in standard form?
a. x²-2x-12=0
b. x²-2x-120=0
c. x²+2x+120=0
d. x²-2c+120=0
6. Which of the following solutions is correct?
I. (x+1)²+4=5
(x+1)²=5-4
(x+1)²=1
√(x+1)²=+/-√1
x+1=+/-1
II. (x+1)²+4=5
x²+2x+1+4=5
x²+2x+5=5
x²+2x+5-5=0
x(x+2)=0
III. (x+1)²+4=5
x²+2x+1+4=5
x²+2x+5=5
(x+1)(x+5)=5
a. I and II only
b. I and only
c. II and III only
d. II only
7. The length of a plywood is twice its width and the area is 45ft². What quadratic equation represents the area of the plywood?
a. x(x+2)=45
b. x(x+2)+45=0
c. x(2x)=45
d. x(2x)+45=0
8. (4x-9)(7x-2)=0, in standard form is __________?
a. 28x²-71x+18=0
b. 28x²-71x-18=0
c. 28x²+55x+18=0
d. 28x²-55x+18=0
9. The solution of x²-7=18.
a. -7 and 18
b. 0 and 25
c. 25and -25
d. 5 and -5
10. Which of the following is one of the solutions of the equation of x²-2x=120.
a. -12
b. -10
c. 10
d. 20​